.Button {
    width: 50px;
    height: 28px;
}

.Button .common {
    display: inline-block;
    font-weight: 500;
    text-align: center;
    touch-action: manipulation;
    cursor: pointer;
    background-image: none;
    border: 1px solid transparent;
    white-space: nowrap;
    line-height: 1.15;
    padding: 0 15px;
    font-size: 12px;
    border-radius: 4px;
    height: 100%;
    width: 100%;
    user-select: none;
    transition: all .3s cubic-bezier(.645, .045, .355, 1);
    position: relative;
}

.Button .primary {
    position: relative;
    color: #FFF;
    background-color: #108ee9;
    border-color: #108ee9;
}

.Button .primary:hover {
    background: #49a9ee;
}

.Button .primary:focus {
    outline: none;
    background: #49a9ee;
    color: #fff;
    border-color: #49a9ee;
}

.Button .simple {
    position: relative;
    color: #949494;
    background-color: #FFF;
    border-color: #949494;
}

.Button .simple:hover {
    border-color: #108ee9;
    color: #108ee9;
}

.Button .simple:focus {
    background-color: #FFF;
    border-color: #108ee9;
    color: #108ee9;
}

.Button .common:focus {
    outline: none;
}

.Button .common:after {
    content: '';
    display: block;
    position: absolute;
    /* 扩大伪类元素4个方向各10px */
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    pointer-events: none;
    background-color: #333;
    background-repeat: no-repeat;
    background-position: 50%;
    opacity: 0;
    transition: all .3s cubic-bezier(.645, .045, .355, 1);
}

.Button .common:active:after {
    opacity: .3;
    /* 设置初始状态 */
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    transition: 0s;
}